Extrusion of Ceramics

Extrusion is one of the main process and an old process for materials engineers. With extrusion you can make intricate shapes with a plastic paste. Even ceramics can be processed using this method. Someone could think that it is only be done to plastics, but as mentioned above metals and ceramics can also be extruded.

Type of extruder
1. Ram type extruder
2. Screw type extruder

Ceramic extrusion (Considering ram type extruder)
To extrude ceramic into a required shape, one must formulate and create a paste according to his/her requirements. The person should think about its plasticity, viscosity, thixotropy, etc. (basically the rheology of the paste) and the pressure it needs to do a good extrusion, the speed of the extrusion, etc.. It is seen that if there is not enough pressure there will be defects on the extruded parts and also all the other parameters are also very important for the quality of the final product.

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